The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-541-0825, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-541-0825 |
| Primary Part Number | 40-200 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives |
| Status | ACTIVE |
| Flow Control Device | DISK, BOTTOM GUIDED AND DISK, TOP GUIDED |
| Valve Stem Design | SINGLE SEAT |
| Renewable Seat Ring Type | PRESSED-IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Remote Actuation Method | DIAPHRAGM |
| Body Style | STRAIGHT THRU |
| Regulation Type | MANUAL SINGLE STAGE |
| First End Style Designator | PLAIN |
| Temp Rating | -40.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 0.0 TO 200.0 CAMERA MOUNT |
| Manual Control Method | WHEEL |
| Valve Loading Method | SPRING |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | BRASS SEAT |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | STEEL STEM |
| Media for Which Designed | AIR |
| Maximum Inlet Pressure Rating | ERR-060 |
| Furnished Items | INTERNAL PILOT VALVE |
| Thread Size and Series/type Designator | 1/4-18 NPT FIRST END |
| Filter | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1C1794-8 | General Electric Company (USA) |
| 40-200 PRIMARY | Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives (USA) |
| Reference | Meaning |
|---|---|
| 1C1794-8 | 5/9 Secondary reference General Electric Company |
| 284-0198-002 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-00-541-0825 is a Valve,regulating,fluid Pressure, manufactured by Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-541-0825 has 2 manufacturer part numbers on file: 1C1794-8 (General Electric Company), 40-200 (Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives).
Key specifications for 40-200: Flow Control Device: DISK, BOTTOM GUIDED AND DISK, TOP GUIDED; Valve Stem Design: SINGLE SEAT; Renewable Seat Ring Type: PRESSED-IN; First End Thread Direction: RIGHT-HAND. 23 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.